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MERCER COUNTY PWSD 1

Missouri — Community Water System — PWSID: MO2024382

System Information

PWSIDMO2024382
System NameMERCER COUNTY PWSD 1
System TypeCommunity Water System
Water SourceSurface Water Purchased
Activity StatusActive
Owner TypeLocal
EPA Region07
Serves SchoolNo
WholesalerNo
First ReportedFeb 2, 1982
Last ReportedDec 31, 2025

Location & Contact

StateMissouri
CityMERCER
ZIP Code64661-0000
Address22920 HIGHWAY M
OrganizationSIEMER, TIFFANY
Phone660-382-4776

Population & Service

Population Served3,200
Service Connections1,525

Drinking Water Violations (39)

This water system has 39 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Mar 27, 2025 — Public Notice Other No No — — — Resolved Mar 1, 2025 Public Notice Rule and Revised PN Rule
Mar 5, 2025 — Public Notice Other No No — — — Resolved Mar 1, 2025 Public Notice Rule and Revised PN Rule
Jun 1, 2024 Jun 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2024 Revised Total Coliform Rule
Jun 1, 2024 Jun 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2024 Revised Total Coliform Rule
Jun 1, 2024 Jun 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2024 Revised Total Coliform Rule
Jun 1, 2024 Jun 30, 2024 Revised Total Coliform Rule MON No Yes — — — Resolved Jun 30, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No No — — — Resolved Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No No — — — Resolved Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No No — — — Resolved Feb 29, 2024 Revised Total Coliform Rule
Feb 1, 2024 Feb 29, 2024 Revised Total Coliform Rule MON No No — — — Resolved Feb 29, 2024 Revised Total Coliform Rule
Jan 1, 2024 Jan 31, 2024 Revised Total Coliform Rule MON No No — — — Resolved Jan 31, 2024 Revised Total Coliform Rule
Jan 1, 2024 Jan 31, 2024 Revised Total Coliform Rule MON No No — — — Resolved Jan 31, 2024 Revised Total Coliform Rule
Jan 1, 2024 Jan 31, 2024 Revised Total Coliform Rule MON No No — — — Resolved Jan 31, 2024 Revised Total Coliform Rule
Jan 1, 2024 Jan 31, 2024 Revised Total Coliform Rule MON No No — — — Resolved Jan 31, 2024 Revised Total Coliform Rule
Nov 1, 2023 Nov 30, 2023 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Nov 1, 2023 Nov 30, 2023 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Nov 1, 2023 Nov 30, 2023 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Nov 1, 2023 Nov 30, 2023 Revised Total Coliform Rule MON No No — — — Resolved Nov 30, 2023 Revised Total Coliform Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No 83 UG/L 0.080 mg/L 80 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No 83 UG/L 0.080 mg/L 80 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No 83 UG/L 0.080 mg/L 80 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2015 Sep 30, 2015 TTHM MCL Yes No 83 UG/L 0.080 mg/L 80 Resolved Sep 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 TTHM MR No Yes — 0.080 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2015 Jun 30, 2015 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2015 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2014 — Consumer Confidence Rule Other No No — — — Resolved Aug 4, 2015 Consumer Confidence Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
Dec 1, 2010 Dec 31, 2010 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Dec 31, 2010 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule
Jan 1, 1995 Jan 31, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Jan 31, 1995 Total Coliform Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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